Hit the ground running and leave all your worries in the rearview in the InfinityRN 4. Instilled with soft, responsive ReactX foam and updated with our best fitting Flyknit yet, you can take off anytime, anywhere without all that wear-and-tear attrition living rent-free in the back of your brain. It's the kind of shoe that can grant you that priceless peace of mind to go longer, faster and farther than you've ever been before thanks to high-rise foam stacks and an intuitive design that will support every stride.